Tag Archives: Cullen

Scout Soybean for Soybean Aphid

Scout Soybean for Soybean Aphid Eileen Cullen, Extension Entomologist Soybean aphids have been present on soybean at low levels (below the economic threshold of 250 aphids per plant) at various locations in the state for the last couple of weeks. … Continue reading

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Black Cutworm Feeding on Corn – Out of the Woods Yet?

Black Cutworm Feeding on Corn – Out of the Woods Yet? Eileen Cullen, Extension Entomologist Black cutworm (BCW) larvae are in the larger stages (4th to 6th instar) and corn in the V4-V6 stages from what I have seen in … Continue reading

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Black Cutworm Feeding on Bt Corn Technology

Black Cutworm Feeding on Bt Corn Technology Eileen Cullen, Extension Entomologist Reports of black cutworm feeding (chewing holes in leaves) and cut plants are coming, with two calls this week. Late planted corn is still smaller than V4-V5 making it … Continue reading

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True Armyworm Larva – Scout Corn and Wheat Fields

True Armyworm Larva – Scout Corn and Wheat Fields Eileen Cullen, Extension Entomologist The insect feeding activity report of note I received this week is that of true armyworm larvae on corn in LaCrosse County in Western Wisconsin. I have … Continue reading

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Update on Alfalfa Weevil and Potato Leafhopper as Alfalfa Transitions from First Crop Hay to Second Crop Growth

Update on Alfalfa Weevil and Potato Leafhopper as Alfalfa Transitions from First Crop Hay to Second Crop Growth Eileen Cullen, Extension Entomologist Alfalfa Weevil – Larval populations of alfalfa weevil have been gradually increasing in first crop alfalfa. The WDATCP … Continue reading

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Soybean Aphid Scanty on Buckthorn in the Upper Midwest

Soybean Aphid Scanty on Buckthorn in the Upper Midwest Eileen Cullen, Extension Entomologist Data from the North Central Regional Soybean Aphid Suction Trap Network sheds light each year on 1) abundance of soybean aphid migrating from soybean to its overwintering … Continue reading

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Early Season Insect Calendar: Seed Corn Maggot

Early Season Insect Calendar: Seed Corn Maggot Eileen Cullen, Extension Entomologist Please see last week’s Wisconsin Crop Manager Vol. 18(8) for a black cutworm scouting alert in corn from emergence through V5 stage. Remember to scout Bt corn hybrids for … Continue reading

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Black Cutworm Damage Potential for Corn

Black Cutworm Damage Potential for Corn Eileen Cullen, Extension Entomologist Corn planting and weed control delayed by wet field conditions coupled with a major black cutworm migration make black cutworm damage a likely event later this month. The WIDATCP Wisconsin … Continue reading

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Latest Bt Corn Approval by EPA includes 5% Refuge In the Bag

Latest Bt Corn Approval by EPA includes 5% Refuge In the Bag Eileen Cullen, Extension Entomologist The EPA recently approved a 5% refuge-in-the-bag (RIB) Bt Corn.  This registration is a licensing agreement between Monsanto and Dow AgroSciences.  Genuity® SmartStax® RIB Complete™ (Monsanto) and … Continue reading

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IRM Calculator Helps Growers Plant the Right Refuge for the Right Bt Corn Hybrid

IRM Calculator Helps Growers Plant the Right Refuge for the Right Bt Corn Hybrid Eileen Cullen, Extension Entomologist In 2011, more corn hybrids contain multiple Bt traits for insect control or suppression. Refuge requirements have changed for multi-trait corn hybrids … Continue reading

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